Frost made her first
appearance in Mortal Kombat: Deadly Alliance as an apprentice to Sub-Zero,
taking the character archetype of the overly ambitious fledgling. Her dedication
to fighting and learning is overshadowed by her arrogance and hostility
towards anyone she perceives to be greater than her, including her own
master, to which she refers to as sifu (a Cantonese term for a master or
teacher), and Sonya.

Frost possess freezing
abilities similar to that of Sub-Zero, albeit in a minor scale. Proof of
this is in the both their abilities to form solid weapons by freezing surrounding
water vapor: while Frost can create small daggers, Sub-Zero is capable
of creating a sword.

After Sub-Zero became
Grand Master of the Lin Kuei clan, he held a tournament in order to recruit
strong warriors. The victor was Frost, whose exceptional skills impressed
him. Breaking Lin Kuei tradition, Sub-Zero took her as his protegé
and trained her personally. With his assistance, her ability to focus her
freezing power increased. However, as her skills grew, so did her arrogance.
Sub-Zero was unable to teach her humility.

When Raiden requested
Sub-Zero's assistance in defeating the Deadly Alliance, Frost's training
was cut short. Sub-Zero brought her along with him for assistance, hoping
at the same time she would attain perspective and enlightenment through
the experience of actual battle. After meeting with the other Earthrealm
warriors (one of which was Sonya, who did not get along with Frost), she
accompanied Sub-Zero into Outworld. It is revealed in the MK Deadly Alliance
Konquest mode, that Sonya had a brief fight with Frost in which it seems
Frost would have lost had the fight not been stopped by the other fellow
warriors. It seems Sonya never trusted Frost and was suspicious of her
intentions in addition to the fact that she despised the arrogance of the
new Lin Kuei warrior.

Once there, her true
intentions for joining the Lin Kuei became apparent. Desiring to become
Grand Master of the clan herself, she immobilized Sub-Zero with a freezing
blast and tore the Dragon Medallion (an artifact which enhanced Sub-Zero's
abilities, as well as the symbol of Lin Kuei leadership) from his chest.
Without the strength and discipline required to control the medallion's
power, she was consumed by her own freezing ability, seemingly killing
her.

Street Fighter
Alpha debuted Sakura, who was basically a female Ryu. Thus, a female
Sub-Zero seemed like an obvious design for the MK series. Visually, she's not a
terrible-looking design, considering some of the others in the game, and gets some
originality points for her icy hair. However, much more thought was obviously put into
her look than her actual fighting style... her moveset
is a bit uninspired. She's one of the better
MK designs to debut in Deadly Alliance, which made it all the more
surprising she didn't appear in Deception.